Frank j



dlniteil iate @anni @wird FRANK J. II-ISENMAN; or oIIIcAco, ILLINOIS.

Letters Patent No. 96,093, ia-ted October 26, 1869.

IMPROVED EGG-DETECTER.

The Schedule referred to in these Lettera P atent and making part `of the name.

To all whom it may concernr.

Be it known that I, FRANK J..ElsExMAN, of Chicago, in the'county of- Cook, and State of `I llinois, have invented a new and useful Improved Egg-Detecter; and l do hereby decla-re the'following to be a full, clear, and exact description thereof, which will enable others skilled in the art to which my invention appertaius to make and use the same, reference being had to the accompanying drawings, forming part of this specitlcat-ion, in which- Figurel is a plan view of' my improved egg-dc-v tecter, and

Figure 2, a vert-ical longitudinal section of the same in the line x x, fig. 1.

Similar letters of reference indicate corresponding parts in the several figures of the drawings.

My invention has for its object to detect unsound eggs without breaking the shell, so that purchasers can at all times obtain fresh and wholesome eggs. To this end,

My invention consists in a small vertical cylinder,

` to the side of which a case or drum is attached, having a funnel-shaped opening in its upper surface.

. Within the cylinder and drum are placed reflectors or mirrors, one in each, inclined toward each other, so

'that when an egg is placed upon the open -upper end of' the cylinder, it will be reflected by the mirror within the cylinder upon that within the case or drum, and from thence through the funnel-shaped opening, as will be hereinafter more fully described.

In the accompanying drawingsy A is a small cylinder, composed of sheet-metal, or other proper material, and placed in a vertical position, as' shown.

B is a small case or drum, formed upon or attached to one side of the cylinder, and provided with afunnel-shaped opening, C, in its upper surface.

vCommunication is, formed between the drum and cylinder by a circular opening, a, in the side of' the latter.

D and E are refiectors or mirrors placed within the cylnderand drum respectively, in such a manner as to incline inward, or toward each otherLfrom their upper to their lower ends, and having their reflectingsurlaces opposite each other. l

The former is made elliptical in form, and the latter quadrangular, in order to ada-pt them to their respective positions within the cylinder and drum.

The top of the cylinder is provided with an annular rim, F, having its centre depressed 'to receive an egg.

In testing an egg, the operation is as follows:

The egg G is placedupon the rim F, over the opening therein, with its larger cud downward, and the cylinder so turned that the rays of the sun, or an artificial light, shall strike the egg.

The latter will then be reflected by the mirror D in the cylinder, through the opening a in the latter, upon the mirror E in the drum, and from thence tln'ough the funnel-shaped opening C, at which point it can be readily observed.

rlhe egg, if sound, will present a translucent ap-.

having the funnel-shaped opening G and the inclined.

reflectors D E, all arranged as herein set forth and shown, for the purpose specified.

v FRANK J. EISENMAN.

Witnesses:

A. BERNsTmN, 4 JOHN A. SILENCE. 

